136921887280 has 40 divisors (see below), whose sum is σ = 335098306800. Its totient is φ = 51886188288.

The previous prime is 136921887257. The next prime is 136921887301. The reversal of 136921887280 is 82788129631.

136921887280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45038575 + ... + 45041614.

It is an arithmetic number, because the mean of its divisors is an integer number (8377457670).

Almost surely, 2^136921887280 is an apocalyptic number.

136921887280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136921887280 is an abundant number, since it is smaller than the sum of its proper divisors (198176419520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136921887280 is a wasteful number, since it uses less digits than its factorization.

136921887280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90080221 (or 90080215 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

It can be divided in two parts, 136921 and 887280, that added together give a palindrome (1024201).

The spelling of 136921887280 in words is "one hundred thirty-six billion, nine hundred twenty-one million, eight hundred eighty-seven thousand, two hundred eighty".